Submission #1008091

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008091		imarn	Cyberland (APIO23_cyberland)	C++17	0 / 100	210 ms	28980 KiB

cyberland

#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
using namespace std;
const int mxn=1e5+5;
vector<pair<int,double>>g[mxn];
double d[65][mxn]{0};
int pr[mxn]{0};
int get(int r){
    return pr[r]==r?r:pr[r]=get(pr[r]);
}
double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr){
    K=min(K,64);iota(pr,pr+N,0);
    for(int i=0;i<M;i++)g[x[i]].pb({y[i],c[i]}),g[y[i]].pb({x[i],c[i]}),pr[get(x[i])]=pr[get(y[i])];
    for(int i=0;i<=K;i++)for(int j=0;j<N;j++)d[i][j]=1e9;
    priority_queue<pair<double,pii>,vector<pair<double,pii>>,greater<pair<double,pii>>>q;d[0][0]=0;q.push({0,{0,0}});
    for(int i=1;i<N;i++)if(arr[i]==0&&get(0)==get(i))d[0][i]=0,q.push({0,{0,i}});
    while(!q.empty()){
        auto u=q.top();q.pop();
        if(d[u.s.f][u.s.s]<u.f)continue;
        if(u.s.s==N-1)continue;
        for(auto v:g[u.s.s]){
            if(d[u.s.f][v.f]>u.f+v.s)d[u.s.f][v.f]=u.f+v.s,q.push({u.f+v.s,{u.s.f,v.f}});
            if(arr[v.f]==2&&u.s.f<K&&d[u.s.f+1][v.f]>u.f+v.s)d[u.s.f][v.f]=u.f+v.s,q.push({u.f+v.s,{u.s.f+1,v.f}});
        }
    }double ans=1e9;
    for(int i=0;i<=K;i++)ans=min(ans,d[i][N-1]);
    for(int i=0;i<N;i++)g[i].clear();
    return (ans==1e9?-1:ans);
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 19
• Subtask 5: 0 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3